A Novel Graphene Oxide Composite Nanofiltration Membrane with Excellent Performance and Antifouling Ability

摘要

Graphene Oxide (GO), as a new type of nanomaterial, has been used in a composite Nanofiltration (NF) membrane showing good performance. It was deposited on a polysulfone support membrane modified with dopamine. In order to prepare an NF membrane with good stability, GO was cross-linked with 1,3,5-benzenetricarbonyl trichloride through a layer-by-layer assembly method. The prepared GO composite NF membrane (M-GO) has been characterized by FTIR, XPS, and SEM. The prepared M-GO showed superior NF performance. The rejection rate and permeation flux of the membrane towards methyl blue were up to 98% and 70 kgm-2h-1, respectively, and the corresponding values towards PO43- were up to 92% and 120 kgm-2h-1, respectively.